Synthesis of Bi2O3/Ag3Po4 Composites and their Photocatalytic Activities under Visible Light Irradiation

The Bi2O3/Ag3PO4 composites consisting of the monoclinic α-Bi2O3 and body-centered cubic Ag3PO4 were successfully synthesized by grinding Ag3PO4 and Bi2O3 mixtures in ethanol using an agate mortar, followed by calcination at 500°C for 5 hours, where the Ag3PO4 was synthesized by co-precipitation method using AgNO3 and NaH2PO4.2H2O as starting materials. The Bi2O3 content in the composite materials changed from 5 to 25 mol.%. The composites were characterized using XRD, DRS and BET specific surface area. The photocatalytic activities were evaluated using Rhodamin B degradation under visible light irradiation of blue LED (λ = 445 nm). The highest photocatalytic activities could be obtained at 5 mol.% Bi2O3 in Bi2O3/Ag3PO4 composite. The enhanced photocatalytic activity could be attributed to the effective separation of hole (h+) and electron (e-) pairs in the Bi2O3/Ag3PO4 composite.

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High activity of Ag-doped Cd0.1Zn0.9S photocatalyst prepared by the hydrothermal method for hydrogen production under visible-light irradiation

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.5.69 ◽

2014 ◽

Vol 5 ◽

pp. 587-595 ◽

Cited By ~ 7

Author(s):

Leny Yuliati ◽

Melody Kimi ◽

Mustaffa Shamsuddin

Keyword(s):

Photocatalytic Activity ◽

Hydrogen Production ◽

Visible Light ◽

Hydrothermal Method ◽

Visible Light Irradiation ◽

Light Irradiation ◽

Precipitation Method ◽

Ag Doping ◽

Light Region ◽

Co Precipitation

Background: The hydrothermal method was used as a new approach to prepare a series of Ag-doped Cd0.1Zn0.9S photocatalysts. The effect of Ag doping on the properties and photocatalytic activity of Cd0.1Zn0.9S was studied for the hydrogen production from water reduction under visible light irradiation. Results: Compared to the series prepared by the co-precipitation method, samples prepared by the hydrothermal method performed with a better photocatalytic activity. The sample with the optimum amount of Ag doping showed the highest hydrogen production rate of 3.91 mmol/h, which was 1.7 times higher than that of undoped Cd0.1Zn0.9S. With the Ag doping, a red shift in the optical response was observed, leading to a larger portion of the visible light absorption than that of without doping. In addition to the larger absorption in the visible-light region, the increase in photocatalytic activity of samples with Ag doping may also come from the Ag species facilitating electron–hole separation. Conclusion: This study demonstrated that Ag doping is a promising way to enhance the activity of Cd0.1Zn0.9S photocatalyst.

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Synthesis of g-Bi2MoO6 by Co-precipitation Method and Evaluation for Photocatalytic Degradation of Rhodamine B, Crystal Violet and Orange II Dyes Under Visible Light Irradiation

Asian Journal of Chemistry ◽

10.14233/ajchem.2018.20917 ◽

2017 ◽

Vol 30 (1) ◽

pp. 97-102 ◽

Cited By ~ 2

Author(s):

Lavakusa Banavatu ◽

D. Srinivasa Rao ◽

K. Basavaiah

Keyword(s):

Visible Light ◽

Photocatalytic Degradation ◽

Crystal Violet ◽

Visible Light Irradiation ◽

Rhodamine B ◽

Light Irradiation ◽

Precipitation Method ◽

Orange Ii ◽

Co Precipitation

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Enhanced Photocatalytic Performance of Iodine Doped Bi2WO6 Nanostructures under Visible-Light Irradiation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.163 ◽

2013 ◽

Vol 423-426 ◽

pp. 163-166 ◽

Cited By ~ 2

Author(s):

Bao Wei Cao ◽

Yun Hua Xu

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Hydrothermal Method ◽

Absorption Spectra ◽

Visible Light Irradiation ◽

Rhodamine B ◽

Photocatalytic Performance ◽

Red Shift ◽

Light Irradiation ◽

Photocatalytic Activities

Bi2WO6 doped with iodine ions were synthesized using hydrothermal method and their photocatalytic activities to degrade Rhodamine B (RhB) under visible-light was investigated. The successful incorporation of I ions in Bi2WO6 was proved by XRD and XPS. UV-vis absorption spectra results show that I ion was successfully doped into Bi2WO6 and a red shift for I-doped Bi2WO6 appeared when compared to pure Bi2WO6. The photocatalytic activities of the photocatalysts were evaluated by the decolorization of RhB under visible-light irradiation. The results showed that the photocatalytic activity of I-doped Bi2WO6 was much higher than the undoped Bi2WO6.

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Comparison of photocatalytic activities of two kinds of lead magnesium niobate for decomposition of organic compounds under visible-light irradiation

Journal of Materials Research ◽

10.1557/jmr.2007.0333 ◽

2007 ◽

Vol 22 (9) ◽

pp. 2590-2597 ◽

Cited By ~ 10

Author(s):

Tetsuya Kako ◽

Jinhua Ye

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Organic Compounds ◽

Visible Light Irradiation ◽

Band Gaps ◽

Lead Magnesium Niobate ◽

Light Irradiation ◽

Photocatalytic Activities ◽

Lead Magnesium ◽

First Time

Two new oxide photocatalysts in the Pb–Mg–Nb ternary system, Pb3MgNb2O9 (PMN) and Pb1.83Mg0.29Nb1.71O6.39, have been synthesized, and their photophysical and photocatalytic properties were investigated for the first time. The band gaps of PMN and Pb1.83Mg0.29Nb1.71O6.39 were estimated to be 3.2 and 2.8 eV, respectively, from their absorption spectra. The photocatalytic activity evaluated from the decomposition of 2-propanol into acetone under visible-light irradiation indicated that Pb1.83Mg0.29Nb1.71O6.39 exhibited at least 20 times higher activity than PMN and has a strong oxidizing potential to mineralize organic compounds.

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Controllable Synthesis and Photocatalytic Activity of Ba0.6Mg0.4TiO3 Particles with Different Morphologies

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.2267 ◽

2014 ◽

Vol 955-959 ◽

pp. 2267-2275 ◽

Cited By ~ 1

Author(s):

Rong Liu ◽

Shi Duo Zhao ◽

Xue Lin

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Visible Light Irradiation ◽

Hydrothermal Process ◽

Light Irradiation ◽

Photocatalytic Properties ◽

X Ray Diffraction ◽

Photocatalytic Activities ◽

Uv Visible ◽

Xrd Patterns

Ba0.6Mg0.4TiO3 (BMT) particles with different morphologies were synthesized through hydrothermal method and their optical and photocatalytic properties were investigated. Their crystal structure and microstructures were characterized using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). XRD patterns demonstrate that the as-prepared samples are tetragonal structure. FESEM shows that BMT crystals can be fabricated in different morphologies by simply manipulating the reaction parameters of hydrothermal process. The UV-visible diffuse reflectance spectra (UV-vis DRS) reveal that the band gaps of BMT photocatalysts are about 2.37 - 2.51 eV. The as-prepared BMT photocatalysts exhibite higher photocatalytic activities in the degradation of methyl orange (MO) under visible light irradiation (λ > 420 nm) compared with traditional N-doped TiO2 (N-TiO2) and pure BaTiO3 (BTO). The high photocatalytic performance of BMT photocatalysts could be attributed to the recombination restraint of the e-/h+ pairs resulting from doping of Mg2+ ions. The influence of morphologies upon the photocatalytic properties of BMT was studied. Furthermore, BMT nanowires reveal the highest photocatalytic activity. Up to 94.0% MO is decolorized after visible light irradiation for 360 min.

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The Starting Material Concentration Dependence of Ag3PO4 Synthesis for Rhodamine B Photodegradation under Visible Light Irradiation

Jurnal Kimia VALENSI ◽

10.15408/jkv.v6i1.14837 ◽

2020 ◽

Vol 6 (1) ◽

pp. 1-9

Author(s):

Febiyanto Febiyanto ◽

Uyi Sulaeman

Keyword(s):

Aqueous Solution ◽

Photocatalytic Activity ◽

Rhodamine B ◽

Visible Region ◽

Starting Material ◽

Light Irradiation ◽

Precipitation Method ◽

Photocatalytic Activities ◽

Facet Plane ◽

Co Precipitation

Synthesis of Ag3PO4 photocatalyst under the varied concentrations of AgNO3 and Na2HPO4·12H2O as starting material has been successfully synthesized using the co-precipitation method. The concentration of AgNO3 is 0.1; 0.5; 1.0; and 2.0 M, whereas Na2HPO4·12H2O is 0.03; 0.17; 0.33; and 0.67 M, respectively. The co-precipitations were carried out under aqueous solution. As-synthesized photocatalysts were examined to degrade Rhodamine B (RhB) under blue light irradiation. The results showed that varying concentrations of starting materials affect the photocatalytic activities, the intensity ratio of [110]/[200] facet plane, and their bandgap energies of Ag3PO4 photocatalyst. The highest photocatalytic activity of the sample was obtained by synthesized using the 1.0 M of AgNO3 and 0.33 M of Na2HPO4·12H2O (AP-1.0). This is due to the high [110] facet plane and increased absorption along the visible region of AP-1.0 photocatalyst. Therefore, this result could be a consideration for the improvement of Ag3PO4 photocatalyst.

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Construction of ZnxCd1−xS/CeO2 composites for enhanced photocatalytic activity and stability by chemical precipitation method

Modern Physics Letters B ◽

10.1142/s0217984921503334 ◽

2021 ◽

pp. 2150334

Author(s):

Yi-Feng Chai ◽

Zhong-Hua Zhu ◽

Ming-Wei Liu ◽

Jing Zeng ◽

Gui-Fang Huang ◽

...

Keyword(s):

Photocatalytic Activity ◽

Methyl Orange ◽

Visible Light ◽

Visible Light Irradiation ◽

Uv Light ◽

Chemical Precipitation ◽

Charge Carriers ◽

Light Irradiation ◽

Precipitation Method ◽

Uv Light Irradiation

Development photoinduced photocatalysts is a significant approach to improve photocatalytic activity and stability. Herein, we successfully prepared Zn[Formula: see text]Cd[Formula: see text]S/CeO2 composites by a facile method. It is found that the Zn[Formula: see text]Cd[Formula: see text]S/CeO2 composites show significant enhancement in photocatalytic activity for methyl orange (MO) degradation under visible and UV light irradiation. The degradation efficiency reaches up to 3.7 times higher than that of pure CeO2 under visible light irradiation. Moreover, the Zn[Formula: see text]Cd[Formula: see text]S/CeO2 samples have almost no loss of photocatalytic activity after five recycles, indicating good photocatalytic stability of the samples. The attractive photocatalytic activity of the Zn[Formula: see text]Cd[Formula: see text]S/CeO2 samples could be attributed to the robust charge carriers transfer and separation.

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Fabrication of novel g-C3N4/nanocage ZnS composites with enhanced photocatalytic activities under visible light irradiation

CrystEngComm ◽

10.1039/c4ce00107a ◽

2014 ◽

Vol 16 (21) ◽

pp. 4485-4492 ◽

Cited By ~ 45

Author(s):

Jing Wang ◽

Peng Guo ◽

Qiangsheng Guo ◽

Pär G. Jönsson ◽

Zhe Zhao

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Visible Light Irradiation ◽

Light Irradiation ◽

Composite Photocatalyst ◽

Photocatalytic Activities

In the present work, the g-C3N4/nanocage ZnS composite photocatalyst was fabricated and the photocatalytic activity was enhanced under visible-light irradiation.

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Investigation of structure and photocatalytic activity on TiO2 hybridized with graphene: compared to CNT case

RSC Advances ◽

10.1039/c5ra09773h ◽

2015 ◽

Vol 5 (79) ◽

pp. 64414-64420 ◽

Cited By ~ 8

Author(s):

ShuaiNan Guo ◽

JinChen Fan ◽

QunJie Xu ◽

YuLin Min

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Visible Light Irradiation ◽

Light Irradiation ◽

Photocatalytic Activities

The structures of TiO2 hybridized with graphene by three different method were studied and their corresponding photocatalytic activities was compared by degrading RhB under UV and visible light irradiation.

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